This table shows the magnitude of the electromagnetic force exerted by two electromagnets on each other as the distance between the two electromagnets is varied. The table provides evidence for which of the following conclusions? A. The force between any two magnets is always constant, regardless of distance. B. As the distance between electromagnets increases, the electromagnetic force also increases. C. The smaller the distance between two electromagnets, the greater the force. D. The force between two magnets depends only on the charge of the electromagnets.​

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Based on its chemical properties, identify the position of each chemical family on the periodic table.